Water-filter



(No Model.)

H. DIRMITT & G. W. WALTERS. WATER Hmm. No. 425,537. PatentedApln 15,1896.

WITNESSES:

UNITED STATES 4PATENT rrrcn.

CHARLES II.DIRMITT AND GEORGE W. WALTERS, OF PHILADELPHIA, PENNSYLVANIA.

WATER-FILTER.

SPECIFICATION forming part of Letters Patent No. 425,537, dated April15, 1890.

Application tiled February 6, 1890. Serial No. 339,459. (No model.)

To @ZZ whom it may concern:

Be it known that We, CHARLES H. DIRMITT and GEORGE IV. VALTERS, citizensof the United States ot America, residing at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Taten Filters, of which the following is aspecification, reference being had therein to the accompanying drawings.

Our invention relates to a water-filter; and it consiste in aconstructionv thereof by which it is readily, easily, and effectuallycleaned.

Referring'to the accompanying drawings, Figure l is a view of ourfilter, partly in plan and partly in section. Fig. 2 is a top view ot'the lower diaphragm with its support. Fig. 3 is a top view of theinclined outlets of the inlet-pipe.

A is a filter shown partly in plan and partly in section.

B B are diaphragme of Wire-gauze, one above and one below the iilteringmaterial O.

D is a support under the diaphragme, which carries the weight of thefiltering material.

E is an inlet-pipe from the main with two branches, one F entering abovethe filtering material with a cock or valve G, the other II enteringbelow the filtering material with a cock or valve I.

K is a discharge-pipe for filtered water.

L is a waste-pipe with cock or valve M.

N is a downward extension of the pipe F, reaching proximately to thesurface of the filtering material and furnished at its bottom with avertical outlet O, by which the mud and water above the ilteringmaterial are stirred up, and downward and laterally-inclined outlets P,by which when the Water is discharged freely from them a rotary motionis given to the water above the filtering material.

In the usual operation of the filter valves I and M are closed and valveG is open. When there is an accumulation of sediment in the filter, themoet of which is always above or very near to the surface of theiiitering material, the valve M is opened and the Water is freelydischarged from above the filtering material, the water passing down andthen up toward the sides of the filter it there be but a verticaloutlet, as at O, or around, sweeping the sides of the filter if there beone or more inclined outlets, as at P, carrying ott the very muchgreater part of the sediment, cleaning the filter very quickly and quitesufficiently for ordinary purposes. Occasionally, for still furtherpurification, after the operation above described the valve G is closedand the valve I opened and the filtering material is rinsed clean by theWater passing upward through it; but it will be found that very littlesediment has escaped the first operation. IVe may use the verticaldischarge alone with good effect; but we attain a more thorough stirringup of the sediment by the rotary motion described.

le claim as our inventionl. In a water-filter having its iilteringmaterial between two perforated diaphragme and having Water-spaces aboveand below the space between said diaphragme, and having an inlet and anoutlet pipe above and an inlet and an outlet pipe below the filteringmaterial, an upper inlet-pipe having its discharge Within the filterbelow the upper diaphragm and proximately at the surface of thefiltering material, substantially as and for the purpose set forth. y

2. In a Waterdilter having its ltering material between two perforateddiaphragme and having water-spaces above and below the space betweensaid diaphragme, and having an inlet and an outlet pipe above and an inlet and an outlet pipe below the iiltering material, and having an upperinlet-pipe whose discharge is within the filter and proXimat-ely at thesurface ot the filtering material, an outlet to said last-namedinlet-pipe below the upper diaphragm so inclined as to discharge thewater passing from it sidewise, whereby a rotary motion is imparted tothe water above, and the upper part of the filtering material and theaccumulated sediment is discharged and the filtering materia-l isretained.

,In testimony whereof we our signatures in presence of two witnesses.

CHARLES Il. DIRMITT. Y GEORGE lV. WA LTERS.

Witnesses:

G. MORGAN ELDRIDGE, Sant.. I. IIANsoN.

